Microsoft is bringing Anthropic’s Claude Sonnet 4 and Claude Opus 4.1 AI models to its Microsoft 365 Copilot today, expanding model choice beyond OpenAI’s offerings.
- Microsoft is bringing Anthropic’s Claude Sonnet 4 and Claude Opus 4.1 AI models.
- Available in Microsoft 365 Copilot today.
- Claude in Researcher is rolling out today.
- Anthropic’s AI models will still be hosted on Amazon Web Services.
- Microsoft will use Anthropic’s AI models in Excel and PowerPoint soon.
Charles Lamanna, president of Microsoft’s business and industry Copilot team, explains, “Copilot will continue to be powered by OpenAI’s latest models, and now our customers will have the flexibility to use Anthropic models too.”
Microsoft’s Researcher agent can now use OpenAI’s deep reasoning models or Anthropic’s Claude Opus 4.1, with a “Try Claude” button available in the Microsoft 365 Copilot app. Users can switch between models easily.
“With this launch, you can build, orchestrate, and manage agents powered by Anthropic models for deep reasoning, workflow automation, and flexible agentic tasks,”
— Charles Lamanna, President of Microsoft’s Business and Industry Copilot Team
Anthropic’s AI models will still be hosted on Amazon Web Services. Microsoft accesses Claude via the Anthropic API.
Originally reported by www.theverge.com as “Microsoft embraces OpenAI rival Anthropic to improve Microsoft 365 apps” on 2025-09-24 19:00:00.
